Abstract

This study evaluates the aerodynamic characteristics and lateral displacements of two staggered buildings in a linked-building (LB) system. Particle image velocimetry and pressure measurements are employed, and the lateral displacement is evaluated using a 3-dimensional analytical model. When the gap distance between two non-linked buildings is small, the wind flows in a narrow jet, and a strong suction is generated on the inner surfaces of the two buildings, leading to a large cross-wind-induced response. However, the cross-wind-induced response is significantly reduced when a link is installed, because the suction forces generated from the buildings are in opposite directions and have a negative aerodynamic correlation. Conversely, with a large gap distance, the buildings at the front obstruct the wind blowing toward the rear buildings. Therefore, while the pressure distribution, wind-force coefficients, and wind-induced responses of the front and rear buildings show similar trends, the magnitude of impact on the front building is larger than that on the rear building. Installing a link is demonstrated to reduce the wind-induced response of the buildings in an LB system. However, the reduction in the along-wind-induced response is less than that in the cross-wind-induced response when the gap distance is small.

Highlights

  • This study examines the aerodynamic characteristics of two staggered buildings in an LB system and evaluates the wind-induced response and the impact of the link on the lateral displacements

  • A wind-tunnel experiment was conducted to understand the aerodynamic characteristics generated by the LB system and obtain the wind loads

  • The reduction in the lateral displacement is smaller than the reduction in the cross-wind lateral displacement with a small gap distance. These findings are considered based on the aerodynamic correlation between the two tall buildings, which again demonstrates the importance of the aerodynamic correlation based on the time history of the lateral displacement

Read more

Summary

Introduction

Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Several previous studies have examined the characteristics of wind-load components generated in areas with dense concentrations of buildings [4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21]. The aerodynamic correlation and lateral displacements of an LB system have been evaluated using proper orthogonal decomposition [34] These studies did not address staggered building arrangements. This study examines the aerodynamic characteristics (e.g., wind velocities and vectors around the system, pressure distribution, and wind-force coefficients) of two staggered buildings in an LB system and evaluates the wind-induced response (lateral along-windinduced and lateral cross-wind-induced) and the impact of the link on the lateral displacements. The obtained wind loads and a 3D analytical model were used to evaluate the lateral displacements of two tall buildings with and without a link

Materials and Methods
Wind Flow around the LB System
Pressure Distribution and Wind Loads on the LB System
Analytical Model of LB System
Standard Deviations of Lateral Displacement
Trajectories for Lateral Displacement
Time History of Lateral Displacement
Conclusions
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call